EP65 - Case Series of 45 Preterm Neonates with Surgical Necrotizing Enterocolitis

Abstract Aim The objective of this study was to determine if the timing of surgery from the onset of necrotising enterocolitis (NEC) diagnosis affects clinical outcomes in preterm neonates. Methods We enrolled 45 preterm neonates who were transferred to the Evelina Children’s Hospital for surgical management of NEC between 2015 and 2018. Neonates had an established diagnosis of NEC as per Bell’s staging criteria. Surgical indications were: pneumoperitoneum, failure to improve despite medical management, shock, peritonitis, abdominal mass or loops, and unresolving intestinal obstruction. Results Average time from NEC onset to surgery was 4.2 days (±9.04) for all neonates, with an average of 5.72 days (±11.42) for neonates with pneumoperitoneum and 2.05 days (±3.22) for neonates without pneumoperitoneum (p=0.09). 26 neonates (57.7%) presented with pneumoperitoneum. Time of NEC onset to surgery was inversely correlated to mortality and directly correlated to postoperative parenteral nutrition at 28 days, although neither were significant (p=0.392 and p=0.744, respectively). 6 neonates (13%) developed short gut postoperatively. Conclusions Although pneumoperitoneum is the most reliable indication for surgery, timing to operation took longer for those neonates than those without pneumoperitoneum. Longer timing to surgery was associated with lower mortality and slightly higher odds of requiring parenteral nutrition postoperatively, although not statistically significant. Though preliminary evidence suggests worse clinical outcomes for neonates with sooner surgery, more trials with larger sample sizes are needed to see if this is statistically significant.